| USRP Hardware Driver and Device Manual Version: 4.10.0.0 UHD and USRP Manual |

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uhd::transport::managed_buffer Class Referenceabstract

Simple managed buffer with release interface. More...

`#include <uhd/transport/zero_copy.hpp>`

Inheritance diagram for uhd::transport::managed_buffer:

## Detailed Description

Simple managed buffer with release interface.

## Public Types
typedef boost::intrusive_ptr< managed_buffer > | sptr

## Public Member Functions
| managed_buffer (void)
virtual | ~managed_buffer (void)
virtual void | release (void)=0
UHD_INLINE void | commit (size_t num_bytes)
template<class T>
UHD_INLINE T | cast (void) const
UHD_INLINE size_t | size (void) const
template<typename T>
UHD_INLINE boost::intrusive_ptr< T > | make (T *p, void *buffer, size_t length)
| Create smart pointer to a reusable managed buffer.
int | ref_count ()

## Public Attributes
boost::detail::atomic_count | _ref_count

## Protected Attributes
void * | _buffer
size_t | _length

## Member Typedef Documentation

## ◆ sptr

typedef boost::intrusive_ptr<managed_buffer> uhd::transport::managed_buffer::sptr

## Constructor & Destructor Documentation

## ◆ managed_buffer()

uhd::transport::managed_buffer::managed_buffer | ( | void |  | ) |
| inline

## ◆ ~managed_buffer()

virtual uhd::transport::managed_buffer::~managed_buffer | ( | void |  | ) |
| inline virtual

## Member Function Documentation

## ◆ cast()

template<class T>

UHD_INLINE T uhd::transport::managed_buffer::cast | ( | void |  | ) | const
| inline

Get a pointer to the underlying buffer.

Returns
  a pointer into memory

## ◆ commit()

UHD_INLINE void uhd::transport::managed_buffer::commit | ( | size_t | num_bytes | ) |
| inline

Use commit() to re-write the length (for use with send buffers).

Parameters

  num_bytes | the number of bytes written into the buffer

## ◆ make()

template<typename T>

UHD_INLINE boost::intrusive_ptr< T > uhd::transport::managed_buffer::make | ( | T * | p,
|  | void * | buffer,
|  | size_t | length )
| inline

Create smart pointer to a reusable managed buffer.

## ◆ ref_count()

int uhd::transport::managed_buffer::ref_count | ( |  | ) |
| inline

## ◆ release()

virtual void uhd::transport::managed_buffer::release | ( | void |  | ) |
| pure virtual

Signal to the transport that we are done with the buffer. This should be called to release the buffer to the transport object. After calling, the referenced memory should be considered invalid.

## ◆ size()

UHD_INLINE size_t uhd::transport::managed_buffer::size | ( | void |  | ) | const
| inline

Get the size of the underlying buffer.

Returns
  the number of bytes

## Member Data Documentation

## ◆ _buffer

void* uhd::transport::managed_buffer::_buffer
| protected

## ◆ _length

size_t uhd::transport::managed_buffer::_length
| protected

## ◆ _ref_count

boost::detail::atomic_count uhd::transport::managed_buffer::_ref_count

The documentation for this class was generated from the following file:

- zero_copy.hpp